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Research Paper

Journal of the Optical Society of Korea 2010; 14(4): 395-402

Published online December 25, 2010 https://doi.org/10.3807/JOSK.2010.14.4.395

Copyright © Optical Society of Korea.

A Compact Tunable VCSEL and a Built-in Wavelength Meter for a Portable Optical Resonant Reflection Biosensor Reader

Hyun-Sung Ko1, Bong-Kyu Kim1, Kyung-Hyun Kim1, Chul Huh1, Wan-Joong Kim1, Jong-Cheol Hong1, Seon-Hee Park1, Seong-Seok Yang2, Ho-Jin Jang2, and Gun-Yong Sung1

1Electronics and Telecommunications Research Institute; 2Optowell Co., Ltd.

Received: May 13, 2010; Revised: August 18, 2010; Accepted: September 7, 2010

Abstract

This study reports a portable and precision photonic biosensor reader that can measure the concentration of a particular antigen using an optical resonant reflection biosensor (ORRB). To create a compact biosensor reader, a compact tunable vertical-cavity surface-emitting laser (VCSEL) and a compact built-in wavelength meter were manufactured. The wavelength stability and accuracy of the compact built-in wavelength meter were measured to be less than 0.02 nm and 0.06 nm, respectively. The tunable VCSEL emission wavelength was measured with the compact built-in wavelength meter, it has a fast sweep time (~ 10 seconds) and a wide tuning range (> 4 nm) that are sufficient for biosensor applications based on ORRB. The reflection spectrum of a plastic based ORRB chip was measured by the fabricated portable photonic biosensor reader using the VCSEL and wavelength meter. Although the reader is the size of a palmtop device, it could make a precise measurement of the peak wavelength on equal terms with a conventional bulky optical spectrometer.

Keywords: Optical resonant reflection biosensor, Tunable laser, Biosensor reader, Guided mode resonance filter,

OCIS codes: 120.0120; 300.6260; 140.3600; 280.1415

Optical Society of Korea

Current Optics
and Photonics


Min-Kyo Seo,
Editor-in-chief

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